Method and device for the production of bores
AssigneeC. & E. Fein GmbH
InventorsRainer Warnicki, Andreas Peisert
Life of this patent
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Abstract
A method and a device for the production of a bore with a special shape, for example a bore which deviates from a cylindrical shape or a bore with an undercut. First, a first bore portion is produced using an oscillatingly driven tool, the first bore portion having a shape deviating from a cylinder and having at least one projection projecting from the wall face of the first bore portion towards the bore center. Subsequently, when a bore with an undercut is to be produced, the tool is then at least partially rotated about its longitudinal axis, in order to produce a second bore portion which has a larger cross section than the first bore portion.
Claims13
A method for producing a bore in a workpiece, comprising the following steps:
- (a) producing a first bore portion using an oscillatingly driven tool, said first bore portion having a shape deviating from a cylinder with at least one projection projecting from a wall face of said first bore portion towards a center of said first bore portion;
- (b) rotating the tool at least partially about its longitudinal axis for producing a second bore portion having a cross section that is larger than a cross section of said first bore portion;
- and
- (c) removing the tool through said first bore portion without separating said first bore portion from the workpiece.
Dependencies are inferred from the claim text.